High-strength welded construction with spring steel wire reinforcement for reliable airflow in demanding underground environments.
Product Summary
This FR spiral ventilation duct is engineered for underground engineering projects, including mines, high-speed rail tunnels, subways, and hydropower stations. Available in diameter 600mm with section lengths of 1m to 20m. The duct features a nylon fabric base with double-sided PVC coating, providing durability and flame retardancy. The spring steel wire reinforcement (5mm-10mm) ensures structural integrity under positive or negative pressure environments.
Key Selling Points
Flame Retardant (FR): Meets SGS test report standards, providing safety in explosion-prone and hazardous areas.
PVC Coated Fabric: Nylon fabric with double-sided PVC coating provides strength and flame retardancy. PVC Laminated Fabric also available. Spring Steel Wire: 5mm-10mm wire helically wound for structural support and pressure resistance.
Applications
Ideal for underground engineering projects such as mine projects, high-speed rail, subway, highway, hydropower station, rock cave ventilation systems.
Customization
Custom diameters (200-2800mm) and lengths (1-20m) available. Choose end connections and optional antistatic fabric. Contact us to discuss specific requirements.
FAQ
What is the minimum order quantity?
Flexible MOQ: no rigid quantity restrictions for standard stock products, zero MOQ for trial orders, and negotiable MOQ for custom fabrics.
What certifications do you have?
ISO 9001, CE, and SGS test reports. ATEX available for explosion-proof series.
Can I get a sample?
Yes, sample orders are welcome.
What is the standard length?
1m to 20m, custom lengths available.
How is the duct installed?
Simple hanging and connection with zipper or velcro; easy on-site assembly.
What is the lead time?
Depends on order quantity and customization; please contact for accurate lead time.
What is the material weight?
From 300 gsm to 2000 gsm.
What end connections are available?
Zipper, Velcro, and steel ring options.
Inquiry Information
Contact Person: Autumn Cui Tel: +86-18251952515 Email: autumn@js-sulong.com WhatsApp: +86 182 5195 2515 Website: www.js-sulong.com Address: No.9 Filter Material Industry Park, Funing, Yancheng, Jiangsu Province, China
